Uses SNPRINT macro where possible. Otherwise uses #define for format.

runtime/vm/debugger.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/debugger.h"
 
 #include "include/dart_api.h"
 
 #include "vm/code_generator.h"
 #include "vm/code_patcher.h"
@@ skipping 400 matching lines @@
   }
   return bpt;
 }
 
 
 const char* Debugger::QualifiedFunctionName(const Function& func) {
   const String& func_name = String::Handle(func.name());
   Class& func_class = Class::Handle(func.Owner());
   String& class_name = String::Handle(func_class.Name());
 
-  const char* kFormat = "%s%s%s";
-  intptr_t len = OS::SNPrint(NULL, 0, kFormat,
-      func_class.IsTopLevel() ? "" : class_name.ToCString(),
-      func_class.IsTopLevel() ? "" : ".",
-      func_name.ToCString());
-  len++;  // String terminator.
-  char* chars = Thread::Current()->zone()->Alloc<char>(len);
-  OS::SNPrint(chars, len, kFormat,
-              func_class.IsTopLevel() ? "" : class_name.ToCString(),
+  return OS::SCreate(Thread::Current()->zone(),
+    "%s%s%s", func_class.IsTopLevel() ? "" : class_name.ToCString(),
               func_class.IsTopLevel() ? "" : ".",
               func_name.ToCString());
-  return chars;
 }
 
 
 // Returns true if function contains the token position in the given script.
 static bool FunctionContains(const Function& func,
                              const Script& script,
                              intptr_t token_pos) {
   if ((func.token_pos() <= token_pos) && (token_pos <= func.end_token_pos())) {
     // Check script equality second because it allocates
     // handles as a side effect.
@@ skipping 2738 matching lines @@
 }
 
 
 void Debugger::RegisterCodeBreakpoint(CodeBreakpoint* bpt) {
   ASSERT(bpt->next() == NULL);
   bpt->set_next(code_breakpoints_);
   code_breakpoints_ = bpt;
 }
 
 }  // namespace dart